Rails in production mode does not connect to second database

Question

I am using rails 3.2.15. I have two postgresql databases one of them main and the other postgis. From model Postgis I make connection to postgis database like this:

class Postgis < ActiveRecord::Base
  establish_connection :postgis_db
  self.table_name = 'geometry_columns'
  self.inheritance_column = :_type_disabled
end

In development mode everything working. But when I switch to production web server fail to start with next exception

gems/activerecord-3.2.15/lib/active_record/connection_adapters/postgresql_adapter.rb:1163:in `exec': PG::UndefinedTable: ERROR:  relation "postgis" does not exist (ActiveRecord::StatementInvalid)
LINE 5:              WHERE a.attrelid = '"postgis"'::regclass
                                        ^
:             SELECT a.attname, format_type(a.atttypid, a.atttypmod),
                     pg_get_expr(d.adbin, d.adrelid), a.attnotnull, a.atttypid, a.atttypmod
              FROM pg_attribute a LEFT JOIN pg_attrdef d
                ON a.attrelid = d.adrelid AND a.attnum = d.adnum
             WHERE a.attrelid = '"postgis"'::regclass
               AND a.attnum > 0 AND NOT a.attisdropped
             ORDER BY a.attnum

It does not connect to postgis database and try to find postgis table in main database. I try different ways to connect to postgis DB, but the result is same.

Edited:

database.yml :

postgis_db:
  adapter: postgresql
  encoding: utf8
  reconnect: false
  database: mydb_gis
  pool: 5
  username: osmsrv
  password: osmsrv
  host: localhost
  schema_search_path: public
production:
  adapter: postgresql
  encoding: utf8
  reconnect: false
  database: gis
  pool: 5
  username: osmsrv
  password: osmsrv
  host: localhost

Answer 1

I solved the problem. About 10 days ago I made model with connection to second DB and it worked fine. When I switch to production I was sure that connection works in development, but I was wrong. In development connection also not works. The problem was in gem 'texticle' "2.0". After removing it, connection works fine.